--- /dev/null
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package syncmap provides a concurrent map implementation.
+// This was the prototype for sync.Map which was added to the standard library's
+// sync package in Go 1.9. https://golang.org/pkg/sync/#Map.
+package syncmap